Constraints on energy conditions in f(R, Lm) gravity

In this paper, we consider the extension of the Hilbert-Einstein action to analyze several interesting features of the theory. More specifically, the Lagrangian f(R) is replaced by f(R, L-m) in action, where R is the Ricci scalar, and L-m is the matter Lagrangian. We derive the motion equations for a test particle in the Friedmann-Lemaitre-Robertson-Walker (FLRW) flat and homogeneous spacetime. We also derive the energy conditions in this framework. Then, we use the cosmographic parameter such as Hubble, deceleration, jerk and snap parameters to constraint the model parameters. As a result, we observe that with the constraint range of model parameters, our model shows the current accelerated expansion of the universe.